Measuring instrument.



P. C. WOODS.

MEASURING INSTRUMENT.

APPLICATION FILED OCT. 9, 1916.

Patented Oct. 30, 1911 awuamtoz 5 w w W0 mm w C K Y E L 11 fi m i 52% \A y Di .0: N. fiw m; @m Q m 5 i m @W sb Q 5 mm W mw ow Q N E m n inn STATES rerun,

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ZPEREY C. WOODS, OF WASHINGTON, IOWA, ASSIGNOR 0F THREE-FOUBiTI-IS TOHARRY H. WELSH, OF WASHINGTON, IOWA. a

MEASURING msraoivmnr.

Instruments, of which the following is a specification, reference being bad to the accompanying drawings.

This invention relates to measuring instruments and particularly to whatI term a caliper bevel square particularly intended to assist carpenters in obtaining a proper fit of stair steps or in other places where perfect joints are required at either end.

A further object of the invention is to so construct this measuring instrument that it may be readily adjusted so asto secure the exact distance between certain objects and that then the device may be collapsed or reduced in length so as to remove it from between said objects and then the device extended to its original position.

A further object is to improve the means whereby this measuring instrument may be set.

A still further object is to provide a device of this character comprising extensible sections and caliper blades or strips rotatably mounted upon the extremities of the sections so that they may be adjusted to any desired angle and provide means whereby they may be held or set in their adjusted positions.

Other objects will appear in the course of the following description.

My invention is illustrated in the accompanying drawings, .wherein- Figure 1 is a top plan view of my measuring device;

Fig. 2 is a side elevation thereof;

Fig. 3 is a section on the line 3-3 of Fig.1;and V j I Fig. 4 is a side elevation of the wear plate 27.

Referring to these figures, it will be seen that my improved instrument comprises a longitudinal bar formed in two sections 10 and 11. These sections are preferably strips of wood and in actual practice these strips will be about two feet in length. The strips are disposed to confront and lie upon each other and to this end one of the strips, as for instance the strip 11, is provided with a yoke 12 which is attached to the side edges Specification of Letters Patent.

Patented oct. 30,1917.

Application fi led October a, 1916. Serial No. 124,600.

of the strip 11 and arches over the strip 10, the strip 10. being freely movable through this yoke. Attached to the extremity of the section 10 is a blade 13 which is made ofa thin strip of metal, the middle of which carries a nut 14 engaged by a binding screw 15. The section 11 is also formed with a like blade 17 attached in a like manner to an offset extension 18, attached to the extremity of the section 11. It will be noted that these blades have beveled ends and parallel sides and it will also be noted that by tightening up upon the screws 15, the

blades will be held in any rotatably adjusted position.

For the purpose of locking the sections 10 and 11 in any desired longitudinally adjusted position, I provide'a slidable clamp designated generally 21. This clamphas the side members 22, the lower cross bar 28,

the upper cross bar 24 and the intermediate cross bar 25. The section 10 is disposed between the intermediate cross bar 25 and the'cross bar 23 and the section 11 is disposed betweenthe cross bar 25 andthe cross bar 24:. The under face of the cross bar 24 is notched at 26 and in this notched portion is a wear plate27 having upwardly extending end flanges 28 which embrace the cross bar 2 1, and passing through the thickened middle of the bar 24 is a set screw 29 which engages this wear plate. A set screw 31 on the slide is adapted to engage the section 10, and the section 10 is provided with a stop 30 at one end. I

Now when it is desired to use this gage or measuring device, as for instance in obtaining data as to the proper length and angle of stair steps, the sections 10 and 11 are expanded until the blades 13 and 17 fit tightly against the stair skirtings. Previous to this expansion of the sections the slide 21 is shifted so that it will engage with the stop 30 and the set screw 29 is released so as to permit the sections to be shifted longitudinally upon each other. When the sections are shifted so that the blades contact properly with the stair skirtings and are disposed at the proper angle, the thumb screws 15 are tightened, thus holding the angular adjustment of the, blades and the set screw 29 is tightened, thus locking the slide upon the section 11. The set screw 31 is then released and the sections are collapsed upon each other until 10, with the slide 21 disposed against stop 30. The fine adjustment is secured however byshit'ting the sections outward with relation to each; other and then binding the section 11 with relation to the slide by means of the set screw 29. Now if this line adjustment had to be remembered by reiterence to a scale marked upon the sections, twodificulties would arise, one that the exact.measurement.takm would have to be accurately remembered in order to again adjust the sections after they have been removed from between the parts being measured, and the other would he thatthe scale would have to be extremely line in order to secure an absolutely accurate measurement. These objections are, entirely removed by the particular construction which 1 have described.

lVhil'e I have described one use of my invention it is obvious that it may be used in a variety of ways for a variety of measurements and that it may be used in the ordinary manner of a pair of calipers and may also be used as a square and for laying off angles.

.Having described my invention, what I claim is:

1. An implement of the character described including a pair of flat measuring bars lying upon and confronting each other.

slide mounted upon and engaging both of said bars and through which slide each bar has longitudinal sliding movement, and independentmeans on the slide for engaging the slide with each of said bars to thereby lock the bars and slide from independent movement, one of the bars having a stop at its inner end engageable with the slide.

l eeapro :2. An implement of the character described including a pair of measuringbars lying'upon and confronting each other a slide through which both of said bars pass and with which both of said bars have independent sliding engagement, said slide having a thin transverse bar separating one of said measuring bars from the other, in dependent means "for locking the slide in engagement with each of said bars, and a stop mounted upon the inner end of one of said bars an d engageable w th the slide.

3. An implement of the character described including a pair of sections having longitudinal sliding engagement with each.

other, a slide mounted on said sections, and comprising end members, upper and lower transverse cross bars and an intermediate cross bar separating said sections from each other, a set screw passing through oneoi said cross bars and operatively engaging with the adjacent section, and a set screw passing through one of the end members and opcratiyely engaging with the side edge of the other section, said section having a stop with which the slide is adapted to engage.

s'i. Bin implement ot' the character de-,

scribed comprising two longitudinally extenoed sections constituting measuring bars, one of saidsections having a yoke at one extremity through which yoke the other section passes whereby the sections may have sliding engagenientwith relation to each other said sections confronting and lying upon each other, angularly adjustable blades mounted upon the outer extremities of the sections, and a slide embracing both of said sections and slidable with relationto both of said sections; said slide having independent means whereby it may be locked in engagement with each of said sections, and one of the sections having a stop at its inner end with which the slide is adapted to engage.

in testimony whereof I. hereunto atiix my signature in the presence of two witnesses.

PERRY G. NOGDS. lVitnesses Owen Woons, J. L. Bnoonnano.

flo pies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

